Floating boat trailer



FIG. 1 is a side elevational view of a floating boat trailer showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof; and

FIG. 5 is a front elevational view thereof. 

The ornamental design for a floating boat trailer, as shown. 